treewide: Replace kmalloc with kmalloc_obj for non-scalar types

This is the result of running the Coccinelle script from
scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to
avoid scalar types (which need careful case-by-case checking), and
instead replace kmalloc-family calls that allocate struct or union
object instances:

Single allocations:	kmalloc(sizeof(TYPE), ...)
are replaced with:	kmalloc_obj(TYPE, ...)

Array allocations:	kmalloc_array(COUNT, sizeof(TYPE), ...)
are replaced with:	kmalloc_objs(TYPE, COUNT, ...)

Flex array allocations:	kmalloc(struct_size(PTR, FAM, COUNT), ...)
are replaced with:	kmalloc_flex(*PTR, FAM, COUNT, ...)

(where TYPE may also be *VAR)

The resulting allocations no longer return "void *", instead returning
"TYPE *".

Signed-off-by: Kees Cook <kees@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/mm/memory.c b/mm/memory.c
index 876bf73959c6..144e30d2825f 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3035,7 +3035,7 @@ static inline struct pfnmap_track_ctx *pfnmap_track_ctx_alloc(unsigned long pfn,
 	if (pfnmap_track(pfn, size, prot))
 		return ERR_PTR(-EINVAL);
 
-	ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+	ctx = kmalloc_obj(*ctx, GFP_KERNEL);
 	if (unlikely(!ctx)) {
 		pfnmap_untrack(pfn, size);
 		return ERR_PTR(-ENOMEM);